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All features
class BASE64_OUTPUT_STREAM
Summary
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A Base64 encoder. The underlying stream gets encoded in Base64 via this filter.
Direct parents
Inherit list: FILTER_OUTPUT_STREAM
Class invariant
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Overview
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Creation features
Features
{ANY}
  • disconnect
    Disconnect from the underlying stream.
{}
{FILTER_OUTPUT_STREAM}
{}
{}
{ANY}
{STREAM}
  • do_detach
    Used by the underlying stream to require not to be filtered anymore
{}
{ANY}
{FILTER}
{ANY}
{}
{ANY}
{}
{STREAM_HANDLER}
{FILTER}
{ANY}
{}
{RECYCLING_POOL}
  • recycle
    Do whatever needs to be done to free resources or recycle other objects when recycling this one
{}
  • dispose
    Action to be executed just before garbage collection reclaims an object.
{}
{ANY}
{ABSTRACT_STRING}
{ANY}
To write a number:
{ANY}
Other features:
{ANY}
{}
{}
{FILTER}
{ANY}
disconnect
effective procedure
{ANY}
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Disconnect from the underlying stream.
require
    • is_connected
    • can_disconnect
      • is_connected
      • can_disconnect
      • is_connected
      • can_disconnect
ensure
  • not is_connected
  • stream = Void
  • not is_filtered
local_can_disconnect: BOOLEAN
is True
constant attribute
{}
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True if this stream can be safely disconnected (without data loss, etc.)
without taking into account the state of the underlying stream.
filtered_put_character (c: CHARACTER)
effective procedure
{FILTER_OUTPUT_STREAM}
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require
  • is_connected
  • can_put_character(c)
filtered_flush
effective procedure
{FILTER_OUTPUT_STREAM}
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require
  • is_connected
state: INTEGER_32
writable attribute
{}
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previous_character: CHARACTER
writable attribute
{}
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alphabet: STRING
is "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
constant attribute
{}
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t2b (code: INTEGER_32): CHARACTER
effective function
{}
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require
  • code >= 0 and then code < 64
ensure
can_put_character (c: CHARACTER): BOOLEAN
effective function
{ANY}
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do_detach
effective procedure
{STREAM}
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Used by the underlying stream to require not to be filtered anymore
ensure
  • stream = Void
stream: OUTPUT_STREAM
writable attribute
{}
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The underlying stream (i.e. the filtered one)
put_character (c: CHARACTER)
effective procedure
{ANY}
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require
  • is_connected
  • not is_filtered and then can_put_character(c)
flush
effective procedure
{ANY}
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Flushes the pipe.
If is_filtered, calls the filter's flush instead.
require
  • is_connected
detach
effective procedure
{ANY}
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Shake off the filter.
ensure
  • not is_filtered
writable attribute
{FILTER}
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The filter that uses this stream as backend
event_can_write: EVENT_DESCRIPTOR
effective function
{ANY}
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writable attribute
{}
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new_url: URL
effective function
{}
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ensure
  • Result /= Void
as_output_stream: OUTPUT_STREAM
effective function
{}
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ensure
  • yes_indeed_it_is_the_same_object: Result.to_pointer = to_pointer
is_connected: BOOLEAN
deferred function
{ANY}
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True if the stream is connected.
Only in that case can data be transferred via this stream.
descriptor: INTEGER_32
effective function
{ANY}
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Some OS-dependent descriptor.
Mainly used by the sequencer library (see READY_CONDITION).
require
has_descriptor: BOOLEAN
effective function
{ANY}
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True if that stream can be associated to some OS-meaningful descriptor.
require
can_disconnect: BOOLEAN
deferred function
{ANY}
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True if the stream can be safely disconnected (without data loss, etc.)
require
url: URL
frozen
effective function
{ANY}
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The URL to this stream as resource
ensure
  • not_void: Result /= Void
  • always_the_same: Result = url
url_memory: URL
writable attribute
{}
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stream_pointer: POINTER
effective function
{STREAM_HANDLER}
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Some Back-end-dependent pointer (FILE* in C, InputStream or OutputStream in Java)
has_stream_pointer: BOOLEAN
effective function
{STREAM_HANDLER}
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True if that stream can be associated to some Back-end-meaningful stream pointer.
require
filtered_descriptor: INTEGER_32
deferred function
{FILTER}
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Find the descriptor of the terminal stream...
Filters do not have descriptors of their own
require
filtered_has_descriptor: BOOLEAN
deferred function
{FILTER}
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True if the underlying terminal stream has a descriptor
require
filtered_stream_pointer: POINTER
deferred function
{FILTER}
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Find the pointer of the terminal stream...
Filters do not have pointers of their own
require
filtered_has_stream_pointer: BOOLEAN
deferred function
{FILTER}
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True if the underlying terminal stream has a pointer
require
event_exception: EVENT_DESCRIPTOR
effective function
{ANY}
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stream_exception: STREAM_EXCEPTION
writable attribute
{}
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recycle
effective procedure
{RECYCLING_POOL}
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Do whatever needs to be done to free resources or recycle other objects when recycling this one
dispose
effective procedure
{}
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Action to be executed just before garbage collection reclaims an object.
sequencer_descriptor (file: POINTER): INTEGER_32
{}
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is_filtered: BOOLEAN
deferred function
{ANY}
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put_natively_stored_string (s: NATIVELY_STORED_STRING)
effective procedure
{ABSTRACT_STRING}
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require
  • s /= Void
put_abstract_string (s: ABSTRACT_STRING)
effective procedure
{ABSTRACT_STRING}
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require
  • s /= Void
put_string (s: ABSTRACT_STRING)
effective procedure
{ANY}
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Output s to current output device.
require
put_unicode_string (unicode_string: UNICODE_STRING)
effective procedure
{ANY}
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Output the UTF-8 encoding of the unicode_string.
require
put_line (s: ABSTRACT_STRING)
effective procedure
{ANY}
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Output the string followed by a '%N'.
%
put_integer (i: INTEGER_64)
frozen
effective procedure
{ANY}
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Output i to current output device.
put_integer_format (i: INTEGER_64, s: INTEGER_32)
frozen
effective procedure
{ANY}
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Output i to current output device using at most s character.
put_natural_8 (n: NATURAL_8)
frozen
effective procedure
{ANY}
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Output n to current output device.
put_natural_8_format (n: NATURAL_8, s: INTEGER_32)
frozen
effective procedure
{ANY}
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Output n to current output device using at most s character.
put_natural_16 (n: NATURAL_16)
frozen
effective procedure
{ANY}
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Output n to current output device.
put_natural_16_format (n: NATURAL_16, s: INTEGER_32)
frozen
effective procedure
{ANY}
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Output n to current output device using at most s character.
put_natural_32 (n: NATURAL_32)
frozen
effective procedure
{ANY}
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Output n to current output device.
put_natural_32_format (n: NATURAL_32, s: INTEGER_32)
frozen
effective procedure
{ANY}
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Output n to current output device using at most s character.
put_natural_64 (n: NATURAL_64)
frozen
effective procedure
{ANY}
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Output n to current output device.
put_natural_64_format (n: NATURAL_64, s: INTEGER_32)
frozen
effective procedure
{ANY}
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Output n to current output device using at most s character.
put_real (r: REAL_64)
effective procedure
{ANY}
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Output r to current output device.
put_real_format (r: REAL_64, f: INTEGER_32)
effective procedure
{ANY}
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Output r with only f digit for the fractional part.
Examples: 
   put_real(3.519,2) print "3.51".
require
put_real_scientific (r: REAL_64, f: INTEGER_32)
effective procedure
{ANY}
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Output r using the scientific notation with only f digit for the fractional part.
Examples: 
   put_real_scientific(3.519,2) print "3.16e+00".
require
put_number (number: NUMBER)
effective procedure
{ANY}
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Output the number.
require
put_boolean (b: BOOLEAN)
effective procedure
{ANY}
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Output b to current output device according to the Eiffel format.
put_pointer (p: POINTER)
effective procedure
{ANY}
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Output a viewable version of p.
put_new_line
effective procedure
{ANY}
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Output a newline character.
put_spaces (nb: INTEGER_32)
effective procedure
{ANY}
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Output nb spaces character.
require
append_file (file_name: STRING)
effective procedure
{ANY}
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require
tmp_file_read: TEXT_FILE_READ
once function
{}
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tmp_string: STRING
once function
{}
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io_putc (byte: CHARACTER, stream: POINTER)
{}
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io_fwrite (buf: NATIVE_ARRAY[CHARACTER], size: INTEGER_32, stream: POINTER): INTEGER_32
{}
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io_flush (stream: POINTER)
{}
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set_filter (a_filter: FILTER)
effective procedure
{FILTER}
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Used by the filter itself to get attached
require
  • a_filter /= Void
ensure
connect_to (a_stream: FILTERABLE)
effective procedure
{ANY}
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Connect the filter to some underlying stream.
require
  • not is_connected
  • a_stream.is_connected
  • not a_stream.is_filtered
ensure